diff --git a/app/src/utils/dom.ts b/app/src/utils/dom.ts
index 2689190..bd063b7 100644
--- a/app/src/utils/dom.ts
+++ b/app/src/utils/dom.ts
@@ -232,3 +232,14 @@ export function updateFavicon(url: string) {
   const link = document.querySelector("link[rel*='icon']");
   return link && link.setAttribute("href", url);
 }
+
+export function updateDocumentTitle(title: string) {
+  /**
+   * Update document title
+   * @param title Document title
+   * @example
+   * updateDocumentTitle("Hello world!");
+   */
+
+  document.title = title;
+}
diff --git a/app/src/utils/env.ts b/app/src/utils/env.ts
index 8d94d19..9ad3364 100644
--- a/app/src/utils/env.ts
+++ b/app/src/utils/env.ts
@@ -1,4 +1,4 @@
-import { updateFavicon } from "@/utils/dom.ts";
+import { updateDocumentTitle, updateFavicon } from "@/utils/dom.ts";
 
 export let appName =
   localStorage.getItem("app_name") ||
@@ -20,7 +20,7 @@ export const deeptrainAppName = import.meta.env.VITE_DEEPTRAIN_APP || "chatnio";
 export const deeptrainApiEndpoint =
   import.meta.env.VITE_DEEPTRAIN_API_ENDPOINT || "https://api.deeptrain.net";
 
-document.title = appName;
+updateDocumentTitle(appName);
 updateFavicon(appLogo);
 
 export function getDev(): boolean {
@@ -65,22 +65,18 @@ export function setAppName(name: string): void {
   /**
    * set the app name in localStorage
    */
-  name = name.trim();
-  if (name.length === 0) return;
-
+  name = name.trim() || "Chat Nio";
   localStorage.setItem("app_name", name);
   appName = name;
 
-  document.title = name;
+  updateDocumentTitle(name);
 }
 
 export function setAppLogo(logo: string): void {
   /**
    * set the app logo in localStorage
    */
-  logo = logo.trim();
-  if (logo.length === 0) return;
-
+  logo = logo.trim() || "/favicon.ico";
   localStorage.setItem("app_logo", logo);
   appLogo = logo;
 
diff --git a/channel/system.go b/channel/system.go
index 1c104db..fe50950 100644
--- a/channel/system.go
+++ b/channel/system.go
@@ -13,8 +13,8 @@ type ApiInfo struct {
 }
 
 type generalState struct {
-	Title   string `json:"title" mapstructure:"title"`
-	Logo    string `json:"logo" mapstructure:"logo"`
+	Title   string `json:"title" mapstructure:"title,omitempty"`
+	Logo    string `json:"logo" mapstructure:"logo,omitempty"`
 	Backend string `json:"backend" mapstructure:"backend"`
 }
 
@@ -52,6 +52,8 @@ func (c *SystemConfig) SaveConfig() error {
 	// fix: import cycle not allowed
 	{
 		viper.Set("system.general.backend", c.GetBackend())
+		viper.Set("system.general.title", c.General.Title)
+		viper.Set("system.general.logo", c.General.Logo)
 	}
 	return viper.WriteConfig()
 }